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Tenoretic 100 Oral

Generic Name: ATENOLOL/CHLORTHALIDONE - ORAL
Pronounced: (ah-TEN-oh-lol/klor-THAL-eh-doan)

Tenoretic 100 Oral Warning

Do not stop taking this medication without consulting your doctor. Some conditions may become worse when you suddenly stop this drug. Some people who have suddenly stopped taking similar drugs have had chest pain, heart attack, and irregular heartbeat. If your doctor decides you should no longer use this drug, he or she may direct you to gradually decrease your dose over 1 to 2 weeks.

When gradually stopping this medication, it is recommended that you temporarily limit physical activity to decrease strain on the heart. Seek immediate medical attention if you develop chest pain/tightness/pressure, chest pain spreading to the jaw/neck/arm, unusual sweating, trouble breathing, or fast/irregular heartbeat.

Tenoretic 100 Oral Side Effects

See also Warning and Precautions sections.

Dizziness, lightheadedness, slow heartbeat, tiredness, nausea, and diarrhea may occur. Decreased sexual ability has been reported infrequently. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

To lower your risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

This product may reduce blood flow to your hands and feet, causing them to feel cold. Smoking may worsen this effect. Dress warmly and avoid tobacco use.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

The chlorthalidone in this product may cause your body to lose too much water and salt (dehydration). Tell your doctor immediately if you have any of these unlikely but serious symptoms of dehydration:

  • very dry mouth
  • extreme thirst
  • muscle cramps/weakness
  • fast heartbeat
  • severe dizziness
  • confusion
  • fainting
  • seizures


Tell your doctor immediately if any of these unlikely but serious side effects occur:

  • very slow/irregular heartbeat
  • new or worsening symptoms of heart failure (such as swelling ankles/feet, severe tiredness, shortness of breath, unexplained/sudden weight gain)
  • mental/mood changes (such as depression, mood swings)
  • toe/joint pain
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